Yes, all three of these last posts. I've been thinking of photographs I'd like to make that would only become possible on an UWA with really shallow depth. 14-28mm is kind of arbitrary, but hey, I'm just wondering aloud here.

What's this jump from $2k (24mm f/1.4) to $50k or $100k for a fast zoom everyone's mentioning? The superzooms make me wonder if there's a niche for an outstanding $10k wide zoom.

I guess in "theory" prices were just humorously speculative... but mechanically a wide zoom 1.8 built right would be a massive piece of glass and very hard to hand hold... for long periods of time... or to even have around your neck... LOLok even on a tripod this would be a massive weight addition... without its own support...as longer lenses have collars to balance weight and provide H&V rotation... Id think a lens of this design would need the same... not for reasons like the schnider TS super rotators 50 90 and 120...but like that...and then all would be grumbling "who would in their right mind want to carry this 8lb piece of glass"lol its quite amusing to think of this... as my 24 f3.5L TSE II has gotten massive can you imagine an 85 1.0 or then back to a 1.8 zoom... wow...

Not possible enough for Canon's marketing dept. to be able to pitch such a huge heavy expensive thing. If we're talking FF then f/2.8 is the max practical aperture for an ultrawide zoom.

But something closer would be forseeable: a ~18mm wide angle with a very large aperture. For the EOS M system.

EOS M's flange focal distance is 18mm, so anything this wide or longer doesn't need to be a retrofocus design. I would go so far as to suggest that the ~18mm distance of APS-C mirrorless systems was specifically selected because they wanted the FF equiv of a 28mm wide angle without requiring retrofocus lens designs.

This is why Fuji's XF 35mm f/1.4 is small & light & costs 500 bucks, and their 18mm f/2 is a pancake. They've got a stabilized 18-55 f/2.8-4 standard zoom the size of the EF-S 18-55 kit zoom as well.

Canon has super lenses at the telephoto end, could they do crazy things with UWA too?

This lens would have a 152mm diameter and cost over $7,000 at launch assuming the same optical design as Nikon's was used and Canon's standard mark-up on the cost of ultra large lens elements was used.

In short, there is no way this would ever make it to market.

Canon could sell 10 times as many f/2.8 UWA lenses as they could f/1.8 ones.

In fact to make up the smaller market for the lens Canon would have to charge close to $17,000 for this lens, if not more.